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CORR
2008
Springer
88views Education» more  CORR 2008»
14 years 10 months ago
Efficient Algorithms for Membership in Boolean Hierarchies of Regular Languages
Abstract. The purpose of this paper is to provide efficient algorithms that decide membership for classes of several Boolean hierarchies for which efficiency (or even decidability)...
Christian Glasser, Heinz Schmitz, Victor L. Seliva...
ENTCS
2006
141views more  ENTCS 2006»
14 years 10 months ago
Abstract Families of Abstract Categorial Languages
Families of Categorial Languages Makoto Kanazawa 1 National Institute of Informatics Tokyo, Japan We show that the class of string languages generated by abstract categorial gramm...
Makoto Kanazawa
ECML
2004
Springer
15 years 3 months ago
Model Approximation for HEXQ Hierarchical Reinforcement Learning
HEXQ is a reinforcement learning algorithm that discovers hierarchical structure automatically. The generated task hierarchy repthe problem at different levels of abstraction. In ...
Bernhard Hengst
SIGIR
2009
ACM
15 years 4 months ago
Web-derived resources for web information retrieval: from conceptual hierarchies to attribute hierarchies
A weakly-supervised extraction method identifies concepts within conceptual hierarchies, at the appropriate level of specificity (e.g., Bank vs. Institution), to which attribute...
Marius Pasca, Enrique Alfonseca
COMPSAC
2001
IEEE
15 years 1 months ago
Designing Role Hierarchies for Access Control in Workflow Systems
he correspondence between the role abstraction in Role-based Access Control (RBAC) and the notion of organizational positions, it seems easy to construct role hierarchies. This is...
Reinhardt A. Botha, Jan H. P. Eloff